CUSTOM GAS & DIESEL TUNING

Built by Enthusiasts for Enthusiasts

Make an Impact

Performance With Purpose

At Piston Twistin, we're passionate about horsepower, hard work, and pushing limits but we also believe in giving back.

That's why we've partnered with GoodAPI to ensure every order contributes to something bigger than performance alone.

🌲 For every order placed, we plant a tree to help combat deforestation and support long-term environmental restoration.

♻️ We also help remove ocean-bound plastic, protecting wildlife, waterways, and coastal ecosystems for future generations.

Whether you're upgrading your Duramax, refining your tune, or building your dream truck, you're helping create a positive impact beyond the automotive world.

Together with GoodAPI, we're able to track and verify these contributions so every purchase doesn't just make more power it helps make a difference.

Build horsepower. Restore forests. Clean our oceans.

Performance with purpose one order at a time. 🌲♻️🌍

Our Story

Learn more

1. WIN OLS

WinOLS is where the real work happens.
Deep map discovery, full binary control, and true custom calibrations

2. EFI LIVE

Easy for clients to use. Ideal for

early GM & Cummins diesels.

Remote Tuning Made Easy.

3. HP TUNERS

Advanced control and flexibility.

Ideal for newer platforms.

Custom tuning made simple.

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Customer Testimonials

  • I’ve had other tunes on my 2012 and none felt this refined. They gave me power, reliability, and the tech support was top-tier. These guys know Cummins inside and out. Even helped me on a Sunday

    Anthony C
  • I use my 2010 Cummins for hauling equipment daily. The tune gave me the torque I was missing, and trans tuning is on point. No hunting for gears, no smoke unless I lay into it—perfect balance all around .

    Josh K
  • Running a 2011 LML with a full weight loss and tune from these guys—absolutely love it. It’s smoother, stronger, and no more annoying check engine lights. My fuel mileage jumped almost 5 MPG on the highway!

    Marcus D
  • These guys absolutely knocked it out with my 2018 Cummins. It’s making clean, reliable power and the transmission tuning is buttery smooth. Customer service was A+ too

    Blake F
  • Running their SOTF tune on my 2017 and I tow heavy with it all the time. Trans tuning is spot-on, EGTs stay cool, and I’ve got power to spare even with 35s. Wouldn’t trust anyone else with my truck.

    Brandon R
  • Running their SOTF tune on my 2017 and I tow heavy with it all the time. Trans tuning is spot-on, EGTs stay cool, and I’ve got power to spare even with 35s. Wouldn’t trust anyone else with my truck.

    Brandon R
  • These guys absolutely knocked it out with my 2018 Cummins. It’s making clean, reliable power and the transmission tuning is buttery smooth. Customer service was A+ too

    Blake F
  • Running a 2011 LML with a full weight loss and tune from these guys—absolutely love it. It’s smoother, stronger, and no more annoying check engine lights. My fuel mileage jumped almost 5 MPG on the highway!

    Marcus D
  • I use my 2010 Cummins for hauling equipment daily. The tune gave me the torque I was missing, and trans tuning is on point. No hunting for gears, no smoke unless I lay into it—perfect balance all around .

    Josh K
  • I’ve had other tunes on my 2012 and none felt this refined. They gave me power, reliability, and the tech support was top-tier. These guys know Cummins inside and out. Even helped me on a Sunday

    Anthony C

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